OSNI Open Data - Largescale Boundaries - Townlands

Published by:
OpenDataNI
Last updated:
18 November 2025
Topic:
Not added
Licence:
Open Government Licence

Summary

The OSNI Largescale Townlands is a polygon dataset consisting of the Townland boundaries. Townlands are an ancient method of land measurement found only in Ireland and can be very important in genealogical research. These small areas of land can vary in size from a few acres upwards. The data has been derived from OSNI Largescale database and has been topologically cleansed and attributed to create a seamless dataset.

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GeoJSON GEOJSON 14 November 2025 Not available
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Shapefile ZIP 14 November 2025 Not available

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